Step-by-step explanation:
This is the correct answer.
Even according to calculator and working.
So not quite sure why those options are incorrect?
The standard form is:

Degree = 5, leading coefficient=4
The 5th degree polynomial is:
Quintic function
it is a trinomial
<u>What is standard form of a polynomial?</u>
When expressing a polynomial in its standard form, the greatest degree of terms are written first, followed by the next degree, and so on.
So, standard form is:

To find the degree of the polynomial, add up the exponents of each term and select the highest sum ( if there are more than 1 variable in single term) or highest power of variable
Degree = 5
In a polynomial, the leading term is the term with the highest power of x.
So, leading coefficient=4
The 5th degree polynomial is:
Quintic function
It has 3 terms. so, it is a trinomial
To learn more about the standard form of a polynomial from the given link
brainly.com/question/26552651
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Answer:
10, 12, 14, 16
Step-by-step explanation:
Given: Four consecutive even integers such that seven times the first exceeds their sum by 18.
Lets assume the first number be "x".
As it is even integers
∴ Second consecutive number will be 
Third consecutive number will be 
Fourth consecutive number will be 
Now, as given seven times the first exceeds their sum by 18.
∴ ![[x+(x+2)+(x+4)+(x+6)]+18 = 7x](https://tex.z-dn.net/?f=%5Bx%2B%28x%2B2%29%2B%28x%2B4%29%2B%28x%2B6%29%5D%2B18%20%3D%207x)
solving the equation to find the number.
⇒ ![[x+(x+2)+(x+4)+(x+6)]+18 = 7x](https://tex.z-dn.net/?f=%5Bx%2B%28x%2B2%29%2B%28x%2B4%29%2B%28x%2B6%29%5D%2B18%20%3D%207x)
Opening parenthesis

⇒ 
subtracting both side by 4x
⇒ 
Dividing both side by 3
∴ x= 10.
Hence, subtituting the value x to find four consecutive even integers.
First number is 10
Second consecutive number will be
= 12
Third consecutive number will be
= 14
Fourth consecutive number will be
= 16
∴ Four consecutive even integers are 10,12,14,16.
The area of the composite figure can be found by summing the whole area that made up the figure. Therefore, the area of the figure is 213.5m²
<h3>Area of a composite figure</h3>
The area of the composite figure is the sum of the area of the whole figure.
Therefore, the composite figure can be divided into 2 triangles and two rectangles.
Hence,
area of triangle1 = 1 / 2 × 10 × 13 = 65 m²
area of the triangle2 = 1 / 2 × 15 × 7 = 52.5 m²
area of the rectangle1 = 8 × 3 = 24 m²
area of rectangle2 = 7 × 6 = 42 m²
area of rectangle3 = 5 × 6 = 30 m²
Therefore,
area of the composite figure = 65 + 52.5 + 24 + 42 + 30 = 213.5 meters squared
learn more on area here: brainly.com/question/27744042
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